Diopter Post List 2017-05-03T05:54:04+00:00

Diopters.  We stopped calling glasses “prescriptions” a while back, since we don’t believe a reasonable educated individual needs a so-called professional to tell them which piece of clear, curved piece of plastic to buy.  (or conversely, keep you from making your own diopter choices)

If anything, we believe that most of the mainstream will give you more diopters than you need, causing progressive myopia and all sorts of long term risky side effects.  We feel strongly about education you on the subject of testing your own refraction, of making your own diopter choices.  Glasses are far less dangerous than lots of over-the-counter drugs!  Read this section for all things related to diopters, learn about the fascinating world of bending light (to your will).    

Michal: Ready To Reduce Normalized Glasses?

Today, an interesting progress update in our darling Facebook group. This one goes a long way to make the point about when to reduce your diopters.  A divine and sacrilegious eye guru has been heard saying that 3-4 months is a good time frame to reduce, and generally by just 0.25 diopters.   But that's just an average number. Rather than strictly going by numbers, you want to get to know your own eyes.  Eyes are part of the whole [...]

By |Focal Planes, Q&A, Student Reviews|

PRO TOPIC: Normalized Or Differentials Indoors?

Here's a common question, about the use of corrective lenses while indoors. You have your normalized for distance vision, often emphasized for outdoor use.  And you have your differential glasses, for sustained single point focus close-up use.  This invites the question what you might do with all the in between distances? Short answer: Whenever you're not on the computer (or your otherwise primary close-up distance), use normalized. No need to adjust for every single distance, two focal planes are just [...]

By |Focal Planes, Q&A, Video|

Pro Topic: Low Myopia & High Astigmatism (Video)

The question of low myopia and high astigmatism has come up multiple times in the BackTo20/20 support forum, this week. Low myopia, as in 1-2 diopters. High astigmatism, as in at least 2 diopters, likely even close to 3. Which to deal with first, spherical or cylinder, is always a question to answer for yourself before starting down the road of addressing your diopter needs.  One focal plane at a time, as uncle Jake likes to say. Best case scenario [...]

By |Focal Planes, How To's, Video|

New Glasses: Massive Eye Pain!

Have you ever left the optometrist's office with new glasses, and your eyes hurting like never before? "Oh you'll get used to it", they tell you. If you were to ask a sagely bearded eye guru, he'd probably tell you that you should go home and measure your own focal plane error and that you might have way more diopters than you need. Maybe.  Also look for diopter ratio changes, or changes to cylinder correction. This is the sort of [...]

(Another) DIY Diopter Measuring Tool

This post is if you, if you're looking to make your own diopter measuring tool. Of course first there is the whole topic of centimeters and diopters covered in various posts in the lens and diopter blog category.  And also of course with endmyopia being by far the largest and most comprehensive science based vision improvement resource online, readers and students have created various similar forms of diopter measuring tools. Adding to the list is this DIY solution, posted by Charleen: [...]

By |Focal Planes, How To's|

Taking New (Lowered Diopter) Glasses On Vacation?

If you're about to have a vacation coming up, and about to be ready for reduced normalized glasses, this article is for you! Discussion courtesy of the BackTo20/20 forum, and David: And centimeter gains! My comments: Familiar environments during focal plane changes, good idea. As with most things here it makes perfect sense once you know.  Make it easy for your visual cortex to sort out a focal plane change, by not also changing your visual environment at the same [...]

By |Focal Planes, Q&A|